More
Less
Same
Could be more or less depending on other factors
A. More
Blading efficiency
Nozzle efficiency
Gross or stage efficiency
Mechanical efficiency
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
48 : 20 : 15 : 7 : 10
10 : 7 : 15 : 20 : 48
20 : 48 : 7 : 15 : 10
7 : 15 : 20 : 10 : 48
Induced draft fan and chimney
Induced draft fan and forced draft fan
Forced draft fan and chimney
Any one of the above
Simple reaction turbine
Velocity compounded turbine
Pressure compounded turbine
Pressure-velocity compounded turbine
Simple impulse turbine
Simple reaction turbine
Impulse-reaction turbine
None of these
4.75 mm
5.47 mm
7.45 mm
47.5 mm
More
Less
Equal
None of these
Longitudinally
Circumferentially
On dished end
Anywhere
Horizontal multi-tubular water tube boiler
Water wall enclosed furnace type
Vertical tubular fire tube type
Horizontal multi-tubular fire tube type
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant
Remains constant
Decreases
Increases
None of these
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Non-coking bituminous coal
Brown coal
Pulverised coal
Coking bituminous coal
180° to each other
90° to each other
0° to each other
None of these
13 mm
31 mm
130 mm
230 mm
Increases
Decreases
Remain unaffected
First increases and then decreases
Workdone on the blades to the energy supplied to the blades
Workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
None of the above
Serve as storage of steam
Serve as storage of feed water for water wall
Remove salts from water
Separate steam from water
0.17 MN/m²
1.7 MN/m²
17 MN/m²
170 MN/m²
1.05
2.86
6.65
10.05
Simple reaction turbine
Velocity compounded turbine
Pressure compounded turbine
Pressure-velocity compounded turbine
Equal to
Lower than
Higher than
None of these
Side by side and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
Surface condenser
Jet condenser
Barometric condenser
Evaporative condenser
Inherent moisture and surface moisture are different things
In some coals moisture may be present up to 40%
Some moisture in coal helps in better burning which is not possible with completely dry coal
It increases thermal efficiency
Dry
Wet
Saturated
Supersaturated
Slow speed engine
Vertical steam engine
Condensing steam engine
Non-condensing steam engine
Velocity of steam
Specific volume of steam
Dryness fraction of steam
All of these
pa = pm/K
pa = pm × K
pa = K/pm
pa = pm + K